Most native asphalt is a residue from evaporated petroleum. It is insoluble in water but soluble when heated. Used widely in building for waterproofing {roof} coverings of many types, exterior wall coverings, flooring tile, and the like.
Most native asphalt is a residue from evaporated petroleum. It is insoluble in water but soluble when heated. Used widely in building for waterproofing {roof} coverings of many types, exterior wall coverings, flooring tile, and the like.